42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
#ifndef __KERNEL_UTIL_DRAW_H__
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# define __KERNEL_UTIL_DRAW_H__
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#include <stddef.h>
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#include <stdint.h>
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// Define font bitmap informations.
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#define KERNEL_FONT_BITMAP_WIDTH (127) // Bitmap width
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#define KERNEL_FONT_BITMAP_HEIGHT (23) // Bitmap height
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#define KERNEL_FONT_BITMAP_CWIDTH (4) // Character width (bitmap)
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#define KERNEL_FONT_BITMAP_CHEIGHT (6) // Character height (bitmap)
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#define KERNEL_FONT_REAL_WIDTH (3) // Charater width (real)
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#define KERNEL_FONT_REAL_HEIGHT (5) // Character height (real)
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#define KERNEL_FONT_NB_CHAR_X ((KERNEL_FONT_BITMAP_WIDTH / KERNEL_FONT_BITMAP_CWIDTH) + 1)
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#define KERNEL_FONT_NB_CHAR_Y ((KERNEL_FONT_BITMAP_HEIGHT / KERNEL_FONT_BITMAP_CHEIGHT) + 1)
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// Internal struct used to draw
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// the ASCII character.
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struct font_block_s
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{
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int16_t height;
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int16_t width;
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struct {
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uint16_t x;
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uint16_t y;
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} bitmap;
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int16_t x;
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int16_t y;
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};
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// Prototype
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extern void kvram_clear(void);
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extern void kvram_display(void);
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extern void kvram_scroll(int lines);
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extern void kvram_reverse(int x, int y, int width, int height);
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extern void kvram_clr_str_area(int x, int y, int width, int height);
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extern void kvram_ascii(int x, int y, char const c);
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#endif /*__KERNEL_UTIL_DRAW_H__*/
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